Trigonometry Examples

$\cos (- \frac{7}{25})$

Step 1

Since $\cos (- \frac{7}{25})$ is an even function, rewrite $\cos (- \frac{7}{25})$ as $\cos (\frac{7}{25})$ .

$\cos (\frac{7}{25})$

Step 2

The result can be shown in multiple forms.

Exact Form:

$\cos (\frac{7}{25})$

Decimal Form:

$0.96105543 \dots$